CN105110353A - Method for carbonizing by-product soda solution used for water treatment by using micro-silicon powder as raw material - Google Patents
Method for carbonizing by-product soda solution used for water treatment by using micro-silicon powder as raw material Download PDFInfo
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- CN105110353A CN105110353A CN201510470418.3A CN201510470418A CN105110353A CN 105110353 A CN105110353 A CN 105110353A CN 201510470418 A CN201510470418 A CN 201510470418A CN 105110353 A CN105110353 A CN 105110353A
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Abstract
The invention relates to a method for carbonizing a by-product soda solution used for water treatment by using micro-silicon powder as a raw material. The method comprises the following steps: with high-temperature flue gas dust micro-silicon powder in an avasite thermo-electric furnace as a raw material, carrying out dissolving in a sodium hydroxide solution under a heating condition so as to prepare water glass, and introducing carbon dioxide and carrying out carbonation reaction with the water glass so as to prepare white carbon black and obtain a by-product carbonate sodium aqueous solution with a content of 10%. The method provided by the invention uses micro-silicon powder as the raw material to carbonize residual liquid of carbonization generated in the process of preparing precipitated white carbon black, and can obtain the soda solution used for the water treatment without need of special equipment and raw materials inputs, so production of soda is simplified; production cost of the soda is reduced; resources are saved; the by-product soda solution can be fully utilized; and good economic and social benefits are obtained.
Description
Technical field
The present invention relates to a kind of preparation method of water treatment soda ash, being specifically related to a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash.
Background technology
Sodium carbonate (Na
2cO
3), molecular weight 105.99.The purity of chemical is many is soda ash again more than 99.5% (massfraction), soluble in water, in weakly alkaline, can provide Na
+ion.Sodium carbonate is soluble in water, is a kind of weak base salt, water-soluble rear generation hydrolysis reaction, makes the aobvious alkalescence of solution, has certain corrodibility, can carry out neutralization reaction, generate corresponding salt and release carbonic acid gas with acid.Overwhelming majority soda ash is used for industry, and sub-fraction is civilian.It is a kind of important Inorganic Chemicals, is mainly used in the production of sheet glass, glasswork and ceramic glaze, is also widely used in water treatment, life washing, acids neutralization and food-processing etc.
Water treatment soda ash solution is the liquid product of carbonate content 10%, is mainly used in the contamination precipitation removal effect in water treatment, utilizes carbonate and underwater gold to belong to ion and generates carbonate hard to tolerate and Precipitation removing.The preparation method of current water treatment soda ash be in 1: 10 ratio by Na
2cO
3solid phase prod directly adds in the middle of clear water, can obtain the water treatment liquid that carbonate content is 10% after stirring.And at present soda manufacture technique mainly divides natural alkaline process and synthesis alkaline process, and synthesize alkaline process and divide solvay soda process and union soda.Natural alkaline process, by alkali ore resources quantity and taste restriction, has stronger region limitation; Ammonia-soda process needs to consume a large amount of natural resourcess and the energy, simultaneously crude salt utilization ratio low (72% ~ 74%), waste liquid and waste sludge discharge amount large; The ammonium chloride purposes of coproduction in union soda is limited, and fund and labor force drop into larger.
Summary of the invention
The object of the invention is to the defect overcoming prior art, providing a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash.
To achieve these goals, the technical scheme taked of the present invention is as follows:
A kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, its gordian technique feature is with the high-temperature flue gas dust SILICA FUME of avasite electrothermal stove as raw material, dissolved under the condition of heating by sodium hydroxide solution and prepare water glass, then pass into carbonic acid gas and white carbon black is prepared in water glass generation carburizing reagent and by-product goes out the aqueous solution that carbonate content is 10%.Comprise the steps:
(1) preparation of water glass
Sodium hydroxide solution being added water glass prepares in still, then adds SILICA FUME water mixed liquid, passes into steam heating solution, and stir lower water generation reaction glass solution, dilution, filters, obtain filtrate for subsequent use;
(2) carbonization of water glass
In carbonating tower, add deionized water, be heated to 90 DEG C, the filtrate that step (1) obtains is joined in carbonating tower, passes into carbon dioxide, generate silicon-dioxide and sodium carbonate solution;
(3) collection of sodium carbonate tail washings
The silicon-dioxide that step (2) obtains is put filtration after tune pH value to surge tank, making beating, dry white carbon black product processed, step (2) is obtained the sodium carbonate solution that sodium carbonate solution thin up is concentration 10%, obtains water treatment soda ash solution.
(1) preparation of water glass
First be the liquid caustic soda of 50% by the content in tank car, get in liquid caustic soda tank with liquid caustic soda transferpump and store, during production, utilize liquid caustic soda transferpump to be got in test tank by liquid caustic soda and measure, be then put into water glass and prepare in still.
SILICA FUME adds and prepares in the mixing tank for coating colors of water after screening, metering, and be transported to water glass by Pulp pump and prepare in still, pass into high-temperature steam direct heating solution in still to 100 DEG C, SILICA FUME and liquid caustic soda start water generation reaction glass solution under agitation.After reaction terminates, water glass solution puts into the thinning tank adding gauge water, temperature of charge is adjusted to 70 DEG C, and diluent is by pump delivery through flame filter press press filtration, and filter cake is CaO, the Fe of non-complete reaction in SILICA FUME
2o
3, the gelling floss that formed of the impurity such as MgO, filtrate puts into first-time filtrate surge tank, then by pump delivery to the press filtration of controlled filter machine, removes remaining impurity, and it is stand-by that filtrate enters the secondary filtrate surge tank adding quantitative deionized water;
(2) carbonization of water glass
Carbonating tower is the equipment that the band of length-to-diameter ratio about 5: 1 stirs, temperature of reaction controls at about 90 DEG C, in carbonating tower, first add the deionized water through metering, pass into high-temperature steam direct heating to 90 DEG C, get in carbonating tower by the water glass solution pump in secondary filtrate surge tank, the kiln gas containing 20% carbonic acid gas transported through outer tube is passed in carbonating tower to react with water glass solution and generates silicon-dioxide and sodium carbonate solution after gas compressor compression is pressurized to 0.4MPa;
(3) collection of sodium carbonate tail washings
After carburizing reagent terminates, silicon-dioxide is put filter after tune pH value to surge tank, making beating, dry white carbon black product processed, will obtain being stored in vinyon tank after sodium carbonate solution is adjusted to concentration 10% for subsequent use;
In above-mentioned steps (1), liquid caustic soda calculates the weight according to feeding intake silicon sodium pre-proportioning modulus meter, and prewired weight ratio is 2.5: 1.
In above-mentioned steps (1), in mixing tank for coating colors, the add-on of water calculates by following weight ratio: silicon powder and water proportioning are 1: 10.
In above-mentioned steps (1), in thinning tank, the add-on of water calculates by following weight ratio: silicon powder and water proportioning are 4: 12.5.
In above-mentioned steps (1) secondary filtrate surge tank gauge water add-on according to filter liquor concentration with addition of, in filter liquor concentration for 8%.
Described in above-mentioned steps (2) through the add-on of the deionized water of metering according to consider liquid concentration with addition of, in filter liquor concentration for 4%.
Compared with prior art, beneficial effect of the present invention is:
Method provided by the invention, SILICA FUME is utilized to prepare the carbonization produced in precipitated silica process residual night for raw material carbonization, do not need special equipment raw material to drop into and can obtain water treatment soda ash solution, simplify the production of soda ash, reduce the production cost of soda ash, save resource, by product is fully used, possess good economic benefit and social benefit.
Embodiment
Below in conjunction with embodiment, detailed further describing is carried out to the present invention.
Embodiment 1
The main reaction formula of the present embodiment is as follows:
The preparation of water glass:
2aNaOH+bSiO
2＝aNa
2O·bSiO
2·nH
2O
The output of the carbonization of water glass and white carbon black and sodium carbonate:
aNa
2O·bSiO
2+aCO
2+H
2O＝bSiO
2·H
2O+aNa
2CO
3
The concrete steps of this technique are mainly the operation such as preparation, the carbonization of water glass, the collection of sodium carbonate tail washings of water glass.
A kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, its gordian technique feature is with the high-temperature flue gas dust SILICA FUME of avasite electrothermal stove as raw material, dissolved under the condition of heating by sodium hydroxide solution and prepare water glass, then pass into carbonic acid gas and white carbon black is prepared in water glass generation carburizing reagent and by-product goes out the aqueous solution that carbonate content is 10%.Comprise the steps:
(1) preparation of water glass
First be the liquid caustic soda of 50% by the content in tank car, get in liquid caustic soda tank with liquid caustic soda transferpump and store, during production, utilize liquid caustic soda transferpump to be got in test tank by liquid caustic soda and measure 545Kg, be then put into water glass and prepare in still.
400Kg SILICA FUME is added in the mixing tank for coating colors being furnished with 4 cubes of water after screening, metering, being transported to water glass by Pulp pump prepares in still, pass into high-temperature steam direct heating solution in still to 100 DEG C, SILICA FUME and liquid caustic soda start water generation reaction glass solution under agitation.After reaction terminates, water glass solution puts into the thinning tank adding 1.25 cubes of water, temperature of charge is adjusted to 70 DEG C, and diluent is by pump delivery through flame filter press press filtration, and filter cake is CaO, the Fe of non-complete reaction in SILICA FUME
2o
3, the gelling floss that formed of the impurity such as MgO, filtrate puts into first-time filtrate surge tank, then by pump delivery to the press filtration of controlled filter machine, removes remaining impurity, it is stand-by that filtrate enters the secondary filtrate surge tank adding quantitative deionized water, is 8% to be advisable with filter liquor concentration in secondary filtrate surge tank.
(2) carbonization of water glass
Carbonating tower is the equipment that the band of length-to-diameter ratio about 5: 1 stirs, and temperature of reaction controls at about 90 DEG C, in carbonating tower, first add the deionized water through metering, deionized water according to consider liquid concentration with addition of, in filter liquor concentration for 4%.Pass into high-temperature steam direct heating to 90 DEG C, get in carbonating tower by the water glass solution pump in secondary filtrate surge tank, the kiln gas containing 20% carbonic acid gas transported through outer tube is passed in carbonating tower to react with water glass solution and generates silicon-dioxide and sodium carbonate solution after gas compressor compression is pressurized to 0.4MPa.
(3) collection of sodium carbonate tail washings
After carburizing reagent terminates, silicon-dioxide is put filtration after tune pH value to surge tank, making beating, dry white carbon black product processed, will obtain being stored in vinyon tank after sodium carbonate solution is adjusted to concentration 10% and get final product.
The above embodiment is only the preferred embodiments of the present invention, and and the feasible enforcement of non-invention exhaustive.For persons skilled in the art, to any apparent change done by it under the prerequisite not deviating from the principle of the invention and spirit, all should be contemplated as falling with within claims of the present invention.
Claims (8)
1. one kind take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that with the high-temperature flue gas dust SILICA FUME of avasite electrothermal stove for raw material, dissolved under the condition of heating by sodium hydroxide solution and prepare water glass, then pass into carbonic acid gas and white carbon black is prepared in water glass generation carburizing reagent and by-product goes out the aqueous solution that carbonate content is 10%.
2. according to claim 1 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, comprise the steps:
(1) preparation of water glass
Sodium hydroxide solution being added water glass prepares in still, then adds SILICA FUME water mixed liquid, passes into steam heating solution, and stir lower water generation reaction glass solution, dilution, filters, obtain filtrate for subsequent use;
(2) carbonization of water glass
In carbonating tower, add deionized water, be heated to 90 DEG C, the filtrate that step (1) obtains is joined in carbonating tower, passes into carbon dioxide, generate silicon-dioxide and sodium carbonate solution;
(3) collection of sodium carbonate tail washings
The silicon-dioxide that step (2) obtains is put filtration after tune pH value to surge tank, making beating, dry white carbon black product processed, step (2) is obtained the sodium carbonate solution that sodium carbonate solution thin up is concentration 10%, obtains water treatment soda ash solution.
3. according to claim 1 and 2 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, comprise the steps:
(1) preparation of water glass
First be the liquid caustic soda of 50% by the content in tank car, get in liquid caustic soda tank with liquid caustic soda transferpump and store, during production, utilize liquid caustic soda transferpump to be got in test tank by liquid caustic soda and measure, be then put into water glass and prepare in still;
SILICA FUME adds and prepares in the mixing tank for coating colors of water after screening, metering, and be transported to water glass by Pulp pump and prepare in still, pass into high-temperature steam direct heating solution in still to 100 DEG C, SILICA FUME and liquid caustic soda start water generation reaction glass solution under agitation.After reaction terminates, water glass solution puts into the thinning tank adding gauge water, temperature of charge is adjusted to 70 DEG C, diluent by pump delivery through flame filter press press filtration, filtrate puts into first-time filtrate surge tank, again by pump delivery to the press filtration of controlled filter machine, remove remaining impurity, it is stand-by that filtrate enters the secondary filtrate surge tank adding quantitative deionized water;
(2) carbonization of water glass
Carbonating tower is the equipment that the band of length-to-diameter ratio about 5: 1 stirs, temperature of reaction controls at about 90 DEG C, in carbonating tower, first add the deionized water through metering, pass into high-temperature steam direct heating to 90 DEG C, get in carbonating tower by the water glass solution pump in secondary filtrate surge tank, the kiln gas containing 20% carbonic acid gas transported through outer tube is passed in carbonating tower to react with water glass solution and generates silicon-dioxide and sodium carbonate solution after gas compressor compression is pressurized to 0.4MPa;
(3) collection of sodium carbonate tail washings
After carburizing reagent terminates, silicon-dioxide is put filtration after tune pH value to surge tank, making beating, dry white carbon black product processed, will obtain being stored in vinyon tank after sodium carbonate solution is adjusted to concentration 10% and get final product.
4. according to claim 3 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, in described step (1), liquid caustic soda calculates the weight according to feeding intake silicon sodium pre-proportioning modulus meter, and prewired weight ratio is 2.5: 1.
5. according to claim 3 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, in described step (1), in mixing tank for coating colors, the add-on of water calculates by following weight ratio: silicon powder and water proportioning are 1: 10.
6. according to claim 3 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, in described step (1), in thinning tank, the add-on of water calculates by following weight ratio: silicon powder and water proportioning are 4: 12.5.
7. according to claim 3 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, in described step (1) secondary filtrate surge tank gauge water add-on according to filter liquor concentration with addition of, in filter liquor concentration for 8%.
8. according to claim 3 a kind of take SILICA FUME as the method for raw material carbonization byproduct water process soda ash, it is characterized in that, described in described step (2) through the add-on of the deionized water of metering according to consider liquid concentration with addition of, in filter liquor concentration for 4%.
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|---|---|---|---|
| CN201510470418.3A CN105110353B (en) | 2015-08-05 | 2015-08-05 | A kind of method for the byproduct water processing soda ash solution that is carbonized using SILICA FUME as raw material |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044780A (en) * | 2016-05-17 | 2016-10-26 | 李智民 | Method for producing rubber additive by using quartz powder |
| CN108017066A (en) * | 2017-12-27 | 2018-05-11 | 昌吉吉盛新型建材有限公司 | Utilize the high-purity white carbon and its production method of the production of industrial silicon by-product SILICA FUME |
| CN113149070A (en) * | 2021-04-20 | 2021-07-23 | 辽宁大学 | Preparation method and application of composite white carbon black |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402004A (en) * | 2014-10-24 | 2015-03-11 | 山西玉竹活性石灰制造有限公司 | Preparation method for production of white carbon black by industrial sodium silicate parallel flow carbon decomposition |
-
2015
- 2015-08-05 CN CN201510470418.3A patent/CN105110353B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104402004A (en) * | 2014-10-24 | 2015-03-11 | 山西玉竹活性石灰制造有限公司 | Preparation method for production of white carbon black by industrial sodium silicate parallel flow carbon decomposition |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044780A (en) * | 2016-05-17 | 2016-10-26 | 李智民 | Method for producing rubber additive by using quartz powder |
| CN106044780B (en) * | 2016-05-17 | 2018-03-09 | 李智民 | A kind of method that rubber additive is produced with silica flour |
| CN108017066A (en) * | 2017-12-27 | 2018-05-11 | 昌吉吉盛新型建材有限公司 | Utilize the high-purity white carbon and its production method of the production of industrial silicon by-product SILICA FUME |
| CN113149070A (en) * | 2021-04-20 | 2021-07-23 | 辽宁大学 | Preparation method and application of composite white carbon black |
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